Pope Benedict XVI waves as he arrives for his last general audience in St. Peter's Square at the Vatican, Wednesday, Feb. 27, 2013. Tens of thousands of people toting banners saying \"Thank you!\" jammed St. Peter's Square on Wednesday to bid farewellto Pope Benedict XVI at his final general audience, the appointment he kept each week to teach the world about the Catholic faith. (AP Photo/Gregorio Borgia)